Professional China Ductile Iron Casting - Alloy Steel Gear by Investment Casting and CNC Machining – RMC Foundry

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Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs of Carbon Steel Casting Company , Brass Investment Casting , Aluminium Investment Casting , Our highly specialized process eliminates the component failure and offers our customers unvarying quality, allowing us to control cost, plan capacity and maintain consistent on time delivery.

Professional China Ductile Iron Casting - Alloy Steel Gear by Investment Casting and CNC Machining – RMC Foundry Detail:

China OEM custom alloy steel castings by lost wax investment casting process. Carbon steel, low alloy steel, and tool steel castings are used in several industrial applications and environments. With their numerous grades, steel and their alloys can be heat-treated to improve its yield and tensile strength; and, adjust hardness or ductility to the engineer’s application needs or desired mechanical properties.

Wear-resistant alloy steel investment castings are the casting parts produced by lost wax investment casting process made of wear-resistant alloy steel. At RMC Foundry, the main sand casting processes we could use for wear-resistant alloy steel are green sand casting, resin coated sand casting, no-bake sand mold casting, lost foam casting, vacuum casting and investment casting. The heat treatment, surface treatment and CNC machining are also available at our factory as per your drawings and requirements.

Among a wide variety of casting alloys, wear-resistant cast steel is a very widely used alloy steel. Wear-resistant cast steel mainly improves the wear resistance of steel castings by adding different content of alloying elements, such as manganese, chromium, carbon, etc., to the alloy. At the same time, the wear resistance of wear-resistant steel castings also depends on the heat treatment method used by the foundry and the structure of the casting.

According to different wear characteristics, the wear of steel castings can be divided into abrasive wear, adhesive wear, fatigue wear, corrosion wear and fretting wear. Wear-resistant steel castings are mainly used in industrial fields with complex working conditions and high mechanical performance requirements, such as mining, metallurgy, construction, power, petrochemical, water conservancy, agriculture and transportation industries. Wear-resistant steel castings are mostly used in abrasion conditions with a certain impact load, such as grinding equipment, excavators, crushers, tractors, etc.

Equivalent Grade of Cast Alloy Steel from Different Markets
GROUPS	AISI	W-stoff	DIN	BS	SS	AFNOR	U.N.E. / I.H.A.	JIS	UNI
Low Alloy Steel	9255	1.0904	55 Si 7	250 A 53	2090	55 S 7	56Si7	-	5SSi8
	1335	1.1167	36 Mn 5	150 M 36	2120	40 M 5	36Mn5	SMn 438(H)	-
	1330	1.1170	28 Mn 6	150 M 28	-	20 M 5	-	SCMn1	C28MN
	P4	1.2341	X6 CrMo 4	-	-	-	-	-	-
	52100	1.3505	100 Cr 6	534 A 99	2258	100 C 6	F.131	SUJ 2	100Cr6
	A204A	1.5415	15 Mo 3	1501 240	2912	15 D 3	16 Mo3	STBA 12	16Mo3 KW
	8620	1.6523	21 NiCrMo 2	805 M 20	2506	20 NCD 2	F.1522	SNCM 220(H)	20NiCrMo2
	8740	1.6546	40NiCrMo22	311-Type 7	-	40 NCD 2	F.129	SNCM 240	40NiCrMo2(KB)
	-	1.6587	17CrNiMo6	820 A 16	-	18 NCD 6	14NiCrMo13	-	-
	5132	1.7033	34 Cr 4	530 A 32	-	32 C 4	35Cr4	SCr430(H)	34Cr4(KB)
	5140	1.7035	41 Cr 4	530 A 40	-	42 C 2	42 Cr 4	SCr 440 (H)	40Cr4
	5140	1.7035	41 Cr 4	530 A 40	-	42 C 2	42 Cr 4	SCr 440 (H)	41Cr4 KB
	5140	1.7045	42 Cr 4	530 A 40	2245	42 C 4 TS	F.1207	SCr 440	-
	5115	1.7131	16 MnCr 5	(527 M 20)	2511	16 MC 5	F.1516	-	16MnCr5
	5155	1.7176	55 Cr 3	527 A 60	2253	55 C 3	-	SUP 9(A)	55Cr3
	4130	1.7218	25 CrMo 4	1717CDS 110	2225	25 CD 4	F.1251/55Cr3	SCM 420 / SCM430	25CrMo4(KB)
	4135 (4137)	1.7220	35 CrMo 4	708 A 37	2234	35 CD 4	34 CrMo 4	SCM 432	34CrMo4KB
	4142	1.7223	41 CrMo 4	708 M 40	2244	42 CD 4 TS	42 CrMo 4	SCM 440	41 CrMo 4
	4140	1.7225	42 CrMo 4	708 M 40	2244	40 CD 4	F.1252	SCM 440	40CrMo4
	4137	1.7225	42 CrMo 4	708 M 40	2244	42 CD 4	F.1252	SCM 440	42CrMo4
	A387 12-2	1.7337	16 CrMo 4 4	1501 620	2216	15 CD 4.5	-	-	12CrMo910
	-	1.7361	32CrMo12	722 M 24	2240	30 CD 12	F.124.A	-	30CrMo12
	A182 F-22	1.7380	10 CrMo9 10	1501 622	2218	12 CD 9, 10	F.155 / TU.H	-	12CrMo9 10
	6150	1.8159	50 CrV 4	735 A 50	2230	50 CV 4	F.143	SUP 10	50CrV4
	-	1.8515	31 CrMo 12	722 M 24	2240	30 CD 12	F.1712	-	30CrMo12
	-	-	-	-	-	-	-	-	-
Medium Alloy Steel	W1	1.1545	C105W1	BW1A	1880	Y 105	F.5118	SK 3	C100 KU
	L3	1.2067	100Cr6	BL 3	(2140)	Y 100 C 6	F.520 L	-	-
	L2	1.2210	115 CrV 3	-	-	-	-	-	-
	P20 + S	1.2312	40 CrMnMoS 8 6	-	-	40 CMD 8 +S	X210CrW12	-	-
	-	1.2419	105WCr6	-	2140	105W C 13	F.5233	SKS 31	107WCr5KU
	O1	1.2510	100 MnCrW 4	BO1	-	90MnWCrV5	F.5220	(SK53)	95MnWCr5KU
	S1	1.2542	45 WCrV 7	BS1	2710	55W20	F.5241	-	45WCrV8KU
	4340	1.6582	34 CrNiMo 6	817 M 40	2541	35 NCD 6	F.1280	SNCM 447	35NiCrMo6KB
	5120	1.7147	20 MnCr 5	-	-	20 MC 5	-	-	-
	-	-	-	-	-	-	-	-	-
Tool and High Alloy Steel	D3	1.2080	X210 Cr 12	BD3	2710	Z200 C 12	F.5212	SKD 1	X210Cr13KU
	P20	1.2311	40 CrMnMo 7	-	-	40 CMD 8	F.5263	-	-
	H13	1.2344	X40CrMoV 5 1	BH13	2242	Z 40 CDV 5	F.5318	SKD 61	X40CrMoV511KU
	A2	1.2363	X100 CrMoV 5 1	BA2	2260	Z 100 CDV 5	F.5227	SKD 12	X100CrMoV51KU
	D2	1.2379	X155 CrMoV 12 1	BD2	2310	Z 160 CDV 12	F.520.A	SKD11	X155CrVMo121KU
	D4 (D6)	1.2436	X210 CrW 12	BD6	2312	Z 200 CD 12	F.5213	SKD 2	X215CrW121KU
	H21	1.2581	X30WCrV9 3	BH21	-	Z 30 WCV 9	F.526	SKD5	X30WCrV 9 3 KU
	L6	1.2713	55NiCrMoV 6	-	-	55 NCDV 7	F.520.S	SKT4	-
	M 35	1.3243	S6/5/2/5	BM 35	2723	6-5-2-5	F.5613	SKH 55	HS6-5-5
	M 2	1.3343	S6/5/2	BM2	2722	Z 85 WDCV	F.5603	SKH 51	HS6-5-2-2
	M 7	1.3348	S2/9/2	-	2782	2 9 2	-	-	HS2-9-2
	HW 3	1.4718	X45CrSi 9 3	401 S 45	-	Z 45 CS 9	F.3220	SUH1	X45CrSi8
	-	1.7321	20 MoCr 4	-	2625	-	F.1523	-	30CrMo4
High Tensile Strength Steel	A128 (A)	1.3401	G-X120 Mn 12	BW10	2183	Z 120 M 12	F.8251	SCMnH 1	GX120Mn12

Capabilities of Investment Casting Foundry:
• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg – 100 kg
• Annual Capacity: 2,000 tons
• Bond Materials for Shell Building: Silica Sol, Water Glass and their mixtures.
• Tolerances: On Request.

Advantages of Investment Casting Components:
- Excellent and smooth surface finish
- Tight dimensional tolerances.
- Complex and intricate shapes with design flexibility
- Capability to cast thin walls therefore a lighter casting component
- Wide selection of cast metals and alloys (ferrous and non-ferrous)
- Draft is not required in the molds design.
- Reduce the need for secondary machining.
- Low material waste.

Materials for Investment Casting Process at RMC Foundry
Category	China Grade	US Grade	Germany Grade
Ferritic Stainless Steel	1Cr17, 022Cr12, 10Cr17,	430, 431, 446, CA-15, CA6N, CA6NM	1.4000, 1.4005, 1.4008, 1.4016, GX22CrNi17, GX4CrNi13-4
Martensitic Stainless Steel	1Cr13, 2Cr13, 3Cr13, 4Cr13,	410, 420, 430, 440B, 440C	1.4021, 1.4027, 1.4028, 1.4057, 1.4059, 1.4104, 1.4112, 1.4116, 1.4120, 1.4122, 1.4125
Austenitic stainless steel	06Cr19Ni10, 022Cr19Ni10, 06Cr25Ni20, 022Cr17Ni12Mo2, 03Cr18Ni16Mo5	302, 303, 304, 304L, 316, 316L, 329, CF3, CF3M, CF8, CF8M, CN7M, CN3MN	1.3960, 1.4301, 1.4305, 1.4306, 1.4308, 1.4313, 1.4321, 1.4401, 1.4403, 1.4404, 1.4405, 1.4406, 1.4408, 1.4409, 1.4435, 1.4436, 1.4539, 1.4550, 1.4552, 1.4581, 1.4582, 1.4584,
Precipitation Hardening Stainless Steel	05Cr15Ni5Cu4Nb, 05Cr17Ni4Cu4Nb	630, 634, 17-4PH, 15-5PH, CB7Cu-1	1.4542
Duplex Stainless Steel	022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N	A 890 1C, A 890 1A, A 890 3A, A 890 4A, A 890 5A, A 995 1B, A 995 4A, A 995 5A, 2205, 2507	1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770
High Mn Steel	ZGMn13-1, ZGMn13-3, ZGMn13-5	B2, B3, B4	1.3802, 1.3966, 1.3301, 1.3302
Tool Steel	Cr12	A5, H12, S5	1.2344, 1.3343, 1.4528, GXCrMo17, X210Cr13, GX162CrMoV12
Heat Resistant Steel	20Cr25Ni20, 16Cr23Ni13, 45Cr14Ni14W2Mo	309, 310, CK20, CH20, HK30	1.4826, 1.4828, 1.4855, 1.4865
Nickle-base Alloy		HASTELLY-C, HASTELLY-X, SUPPER22H, CW-2M, CW-6M, CW-12MW, CX-2MW, HX(66Ni-17Cr), MRE-2, NA-22H, NW-22, M30C, M-35-1, INCOLOY600, INCOLOY625	2.4815, 2.4879, 2.4680
Aluminum Alloy	ZL101, ZL102, ZL104	ASTM A356, ASTM A413, ASTM A360	G-AlSi7Mg, G-Al12
Copper Alloy	H96, H85, H65, HPb63-3, HPb59-1, QSn6.5-0.1, QSn7-0.2	C21000, C23000, C27000, C34500, C37710, C86500, C87600, C87400, C87800, C52100, C51100	CuZn5, CuZn15, CuZn35, CuZn36Pb3, CuZn40Pb2, CuSn10P1, CuSn5ZnPb, CuSn5Zn5Pb5
Cobalt-base Alloy		UMC50, 670, Grade 31	2.4778

INVESTMENT CASTING TOLERANCES
Inches		Millimeters
Dimension	Tolerance	Dimension	Tolerance
Up to 0.500	±.004″	Up to 12.0	± 0.10mm
0.500 to 1.000”	±.006″	12.0 to 25.0	± 0.15mm
1.000 to 1.500”	±.008″	25.0 to 37.0	± 0.20mm
1.500 to 2.000”	±.010″	37.0 to 50.0	± 0.25mm
2.000 to 2.500”	±.012″	50.0 to 62.0	± 0.30mm
2.500 to 3.500”	±.014″	62.0 to 87.0	± 0.35mm
3.500 to 5.000”	±.017″	87.0 to 125.0	± 0.40mm
5.000 to 7.500”	±.020″	125.0 to190.0	± 0.50mm
7.500 to 10.000”	±.022″	190.0 to 250.0	± 0.57mm
10.000 to 12.500”	±.025″	250.0 to 312.0	± 0.60mm
12.500 to 15.000	±.028″	312.0 to 375.0	± 0.70mm